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Kazuto's younger sister, she helps him run the bathhouse but like her parents is concerned it is just a money pit and that they might soon be broke. She tends to act like a scrooge in general when it comes to money and she sees it as quite important, in one instance was even willing to sell Valkyrie away till she found the money offered was fake. She is also constantly studying in the hopes of getting into a good high school and later university. She doesn't seem very interested in having her own social life and even turned down the advances of the most popular boy at her school, though the two later became friends.

She is all for the marriage between Valkyrie and Kazuto, since she sees it as a way for the family to get out of debt.